I built a 45 cal. percussion rifle with drum and nipple but never comfortable with strength in the breach area of the drum and nipple system. Will venting the drum at the clean out screw (8/32 screw) with a 1/16" hole lessen the breach pressure? My goal is to improve the safety level when using loads of 60 - 80 grains of Pyrodex. Also, will the rifle's performance be affected by the vent hole. Yes, I am aware that anyone standing to my right side must be advised of the flash.
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Venting Precussion Rifle Drum
- Thread starter rfcbuf
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George Holton
40 Cal.
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:rotf: Its more fun to quietly sneak up on the person to the right, say flint, they know its not, then pepper them.
Yes, venting the drum will lessen the breech pressure, just like a flint lock has less pressure due to the vent hole. You can also drill the durm so it will shoot towards the muzzle. Vented percussion rifles must be rare in my area as I've never seen one yet.
Having made my comment about this in the other post on the same subject, I'll just give a link to it.
Breech Pressures
zonie
Breech Pressures
zonie
walruskid1
54 Cal.
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venting will also (in theory) improve lock time due to not having to push a column of air ahead of the flame front. the dixie catalog has info hidden in the back of the book. i think it covers venting the drum.
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